Prediction of Load Capacity of Reinforced Concrete Corbels Strengthened with CFRP Sheets
Analytical procedure was carried out in this paper to
calculate the ultimate load capacity of reinforced concrete corbels
strengthened or repaired externally with CFRP sheets. Strut and tie
method and shear friction method proposed earlier for analyzing
reinforced concrete corbels were modified to incorporate the effect of
external CFRP sheets bonded to the corbel. The points of weakness
of any method that lead to an inaccuracy, especially when
overestimating test results were checked and discussed. Comparison
of prediction with the test data indicates that the ratio of test /
calculated ultimate load is 0.82 and 1.17 using strut and tie method
and shear friction method, respectively. If the limits of maximum
shear stress is followed, the calculated ultimate load capacity using
shear friction method was found to underestimates test data
considerably.
[1] G. B. Hassan, Behavior of High Strength Concrete Corbels Wrapped
with Carbon Fiber Reinforced Concrete (CFRP) Sheets, MSc Thesis,
University of Duhok, 2010
[2] Z. H. Wang, Study on the Combined Bending and Shear Behavior of
RC Beam Strengthened with FRP Composites, in 28th Conf. on Our
World in Concrete and Structures: 27-28 August, 2001, Singapore,
pp. 671-676.
[3] A. H. Nilson, D. Darwin and Ch. W. Dolan, Design of Concrete
Structures, 13th ed., New York: McGraw- Hill, 2004.
[4] B. A. M. Zangana, Effect of Wrapping R.C. Beams by Carbon and
Glass Fiber Strips Internally and Externally to the Shear Capacity,
MSc Thesis, University of Mosul, 2008, 124 pp.
[5] ACI 318M-08, Building Code Requirements for Reinforced
Concrete, American Concrete Institute, 2008.
[6] A. F. Hassan, and A. A. Mohammed, Effect of Concrete Strength
and Stirrups Ratio of Shear Friction Capacity of Concrete, J. Duhok
University, vol. 10, no. 1, pp. 56-65, 2007.
[1] G. B. Hassan, Behavior of High Strength Concrete Corbels Wrapped
with Carbon Fiber Reinforced Concrete (CFRP) Sheets, MSc Thesis,
University of Duhok, 2010
[2] Z. H. Wang, Study on the Combined Bending and Shear Behavior of
RC Beam Strengthened with FRP Composites, in 28th Conf. on Our
World in Concrete and Structures: 27-28 August, 2001, Singapore,
pp. 671-676.
[3] A. H. Nilson, D. Darwin and Ch. W. Dolan, Design of Concrete
Structures, 13th ed., New York: McGraw- Hill, 2004.
[4] B. A. M. Zangana, Effect of Wrapping R.C. Beams by Carbon and
Glass Fiber Strips Internally and Externally to the Shear Capacity,
MSc Thesis, University of Mosul, 2008, 124 pp.
[5] ACI 318M-08, Building Code Requirements for Reinforced
Concrete, American Concrete Institute, 2008.
[6] A. F. Hassan, and A. A. Mohammed, Effect of Concrete Strength
and Stirrups Ratio of Shear Friction Capacity of Concrete, J. Duhok
University, vol. 10, no. 1, pp. 56-65, 2007.
@article{"International Journal of Architectural, Civil and Construction Sciences:55678", author = "Azad A. Mohammed and Gulan B. Hassan", title = "Prediction of Load Capacity of Reinforced Concrete Corbels Strengthened with CFRP Sheets", abstract = "Analytical procedure was carried out in this paper to
calculate the ultimate load capacity of reinforced concrete corbels
strengthened or repaired externally with CFRP sheets. Strut and tie
method and shear friction method proposed earlier for analyzing
reinforced concrete corbels were modified to incorporate the effect of
external CFRP sheets bonded to the corbel. The points of weakness
of any method that lead to an inaccuracy, especially when
overestimating test results were checked and discussed. Comparison
of prediction with the test data indicates that the ratio of test /
calculated ultimate load is 0.82 and 1.17 using strut and tie method
and shear friction method, respectively. If the limits of maximum
shear stress is followed, the calculated ultimate load capacity using
shear friction method was found to underestimates test data
considerably.", keywords = "Corbel, Strengthening, Strut and Tie Model, Shear
Friction", volume = "6", number = "8", pages = "595-6", }